"Is the DS that much better?"
No, but the colored leds were better:nana:
(sorry, I couldn't resist
)
Seriously, When using the old BS, it was weak and the CS offered a serious improvement. To me, with the CS, ARC entered another "usefulness-level" and offered just the right amount of light I needed for the intended use of the light (edc).
The BS was dimmer and worked only reasonably in complete darkness. With ambient light, the BS didn't do (for me).
The DS is brighter still, when compared to the CS, but not up to a point where it will really be able to do other tasks than these of the CS. It doesn't enter "the next level". When you need something significantly brighter than the CS, I would take a Fenix L0D, a Streamlight Microstream or a Peak Baltic HP.
This, of course, is my opinion and finding, so feel very free to differ
.
Kind regards,
Joris